Dynacord DPA 4411 Indicators And Fault Notification 7.1 Standby Indicator, Ready Indicator

∙mains operation remote control ON/OFF

∙battery operation remote control ON/OFF

∙monitoring and fault message transmission via the PROMATRIX Manager DPM 4000; in accordance to DIN EN 60849 standard

−thermal overload of the mains transformer

−thermal overload of power output stages 1 to 4

−monitoring of the functioning of the power output stages 1 to 4 via pilot tone signal (optional, only with NRS 90206 installed)

−ground fault detection for loudspeaker lines 1 to 4 (optional, only with NRS 90207 installed)

−measuring of input and output level peaks 1 to 4

−measuring of output voltages / levels of the power outputs 1 to 4

−measuring of output currents of the power outputs 1 to 4

−monitoring of connected loads 1 to 4 via current-voltage-measuring

−recognition of amplifier type including user-definable name

−reading of software revision of the remote module

−reading of error flags

−reading of the output configuration

−recognition of extensions NRS 90206 and NRS 90207

∙switching the input monitor / output monitor 1 to 4 to the monitor bus

∙pilot tone signal ON/OFF (optional, only with NRS 90206 installed)

∙ground fault error flags reset

Note Prior to the first operation of the amplifier DPA 4411, you have to set the amplifier address using the two Hexadecimal Code switches ADDRESS (18) (refer to the PROMATRIX handbook) and using a waterproof marker pen mark the setting in the ADDRESS label field on the rear panel of the appliance.

By sending the corresponding command via the serial port REMOTE CONTROL (13) of the remote module, this function is activated from the PROMATRIX Manager DPM 4000 (see PROMATRIX handbook).

7.Indicators And Fault Notification 7.1 STANDBY Indicator

When correctly connected and with mains voltage and/or battery voltage present, the green STANDBY indicator (4) lights.

7.2 READY Indicator

The power amplifier DPA 4411 provides a power-on delay of approximately 3 s to prevent switch clicks from becoming audible. If after this period of time no faulty condition has been detected, the green READY indicator (7) lights and the mute-relays pull. When thermal overload of the mains transformer or of one of the power output stages is detected, the corresponding green READY indicator (7) will not light and the according mute-relay drops. If, with the NRS 90206 extension installed the pilot-threshold (see paragraph 9.1) is declined, the corresponding green READY indicator (7) goes out but the amplifier stays operational and a fault message gets transmitted to the PROMATRIX Manager DPM 4000.

7.3 PROTECT Indicator

In case of thermal overload of the mains transformer or of a power output stage is detected, the red PROTECT indicator (5) will light. During thermal overload of the mains transformer, all mute-relays drop while during thermal overload of a power output stage, only the according mute-relay drops. After the mains transformer or the power amplifier have regained their normal temperature, the red PROTECT indicator (5) automatically goes out and the appliance recovers normal operation mode. The faulty condition could have been caused by either overload, too high environmental temperature, or by an error in the ventilation system. A fault-message is transmitted to the PROMATRIX Manager DPM 4000.

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